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. 2019 Sep 9;18(5):3375–3382. doi: 10.3892/etm.2019.7988

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Copyright: © Zhang et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Figure 1. — Long-term treatment effect of botulinum toxin A on trigeminal neuralgia represented by VAS scores. It was indicated that (A) female sex resulted in lower VAS scores during the entire follow-up period. (B) No influence of age on the long-term treatment effect was observed. (C) A short disease course and (D) a high injection dose resulted in lower VAS scores during the entire follow-up period. VAS, visual analog scale; L, low; M, medium; H, high.